general protection fault, probably for non-canonical address 0xdffffc00000000aa: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000550-0x0000000000000557]
CPU: 0 PID: 19700 Comm: syz-executor.2 Not tainted 5.14.0-rc5-next-20210810-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline]
RIP: 0010:wb_timer_fn+0x149/0x1740 block/blk-wbt.c:360
Code: 03 80 3c 02 00 0f 85 68 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 50 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 50 05 00 00 48 b8 00 00 00
RSP: 0000:ffffc9000451fc20 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000aa RSI: ffffffff83d107dd RDI: 0000000000000550
RBP: ffff888066baa000 R08: 0000000000000003 R09: ffff888066baa183
R10: ffffffff83d107d2 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff8880228dc080 R15: ffff888066baa0d0
FS:  0000000001a5b400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f024000 CR3: 000000008b34d000 CR4: 00000000001506f0
Call Trace:
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x45/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0033:0x41480b
Code: 00 45 31 f6 4c 8d 2d 14 b8 14 00 eb 2b 66 90 4c 89 f7 44 89 44 24 08 e8 b3 1c ff ff 44 8b 44 24 08 40 08 c5 0f 85 2d 01 00 00 <41> 83 c4 01 45 39 67 04 0f 86 bf 00 00 00 44 89 e7 49 8b 77 20 4d
RSP: 002b:00007ffe3ad4a9e0 EFLAGS: 00000246
RAX: 000000003273faf1 RBX: 00007f4990640008 RCX: 0000001b2f020000
RDX: 0000001b2f024b20 RSI: ffffffff8181a9b0 RDI: 000000003273faf1
RBP: 0000000000000001 R08: 000000003273faf1 R09: 0000001b2f0213cc
R10: 0000000000001af1 R11: 000000003273faf5 R12: 0000000000011bb3
R13: 0000000000560000 R14: ffffffff8181a9b0 R15: 000000000056c008
Modules linked in:
---[ end trace b59112b1440ecd1f ]---
RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline]
RIP: 0010:wb_timer_fn+0x149/0x1740 block/blk-wbt.c:360
Code: 03 80 3c 02 00 0f 85 68 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 50 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 50 05 00 00 48 b8 00 00 00
RSP: 0000:ffffc9000451fc20 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000aa RSI: ffffffff83d107dd RDI: 0000000000000550
RBP: ffff888066baa000 R08: 0000000000000003 R09: ffff888066baa183
R10: ffffffff83d107d2 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff8880228dc080 R15: ffff888066baa0d0
FS:  0000000001a5b400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f024000 CR3: 000000008b34d000 CR4: 00000000001506f0